一般说来，癌瘤不具有危险信号因此它们不会引发强烈的免疫反应。

Generally, cancers do not have danger signals and, therefore, they cannot elicit strong immune reactions.

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结果示颅内黑色素瘤的临床表现不具有特征性。

There was no unique character in clinical manifestation of intracranial malignant melanoma.

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SCLC 具有神经内分泌器官样巢状结构，NHL瘤细胞更弥漫、均一，不具有特异性结构；

SCLC with neuroendocrine organ-like nest-like structure, NHL tumor cells is more diffuse, uniform, does not have a specific structure;

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